Environmental Rules in Tempe, AZ (2026)
5 verified environmental rules for Tempe, Arizona, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Tempe operates a comprehensive stormwater management program under its MS4 (Municipal Separate Storm Sewer System) permit from ADEQ. The city regulates stormwater quality and quantity through development standards, construction site controls, and public education. The Salt River, Tempe Town Lake, and Indian Bend Wash are primary receiving waters. Illicit discharges to the storm drain system are prohibited.
Tempe Stormwater Management
Some RestrictionsErosion Control
Tempe requires erosion and sediment control during construction activities under its stormwater management program and building code. Projects disturbing one acre or more must obtain an Arizona AZPDES Construction General Permit from ADEQ. A Stormwater Pollution Prevention Plan (SWPPP) is required. Best Management Practices (BMPs) must prevent sediment from leaving the construction site.
Tempe Erosion Control Requirements
Some RestrictionsCoastal Development
Tempe has no coastal zones, but the city manages significant waterfront development around Tempe Town Lake on the Salt River. The lake area is governed by special planning districts and overlay zones in the Zoning and Development Code. Development near the lake must comply with flood plain regulations, the Salt River Management Plan, and environmental review requirements.
Tempe Waterfront Development (Tempe Town Lake)
Some RestrictionsFlood Zones
Tempe participates in the National Flood Insurance Program (NFIP) and regulates development in FEMA-designated flood zones. Properties in Special Flood Hazard Areas (SFHAs) along the Salt River and Indian Bend Wash must meet floodplain management standards.
Tempe Flood Zones & Floodplain Management
Heavy RestrictionsGrading & Drainage
Tempe requires grading and drainage permits for projects that alter the natural grade of land. The city's engineering standards ensure proper stormwater management and prevent drainage problems to adjacent properties. Tempe participates in the Flood Control District of Maricopa County programs. Development must retain stormwater on-site for certain storm events.
Tempe Grading and Drainage Regulations
Some RestrictionsLooking for Maricopa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Tempe city rules.
Environmental Rules in Maricopa County →